// Test that fork fails gracefully.
// Tiny executable so that the limit can be filling the proc table.

#include "kernel/types.h"
#include "kernel/stat.h"
#include "user/user.h"

#define N  1000

void print(const char *s)
{
	write(1, s, strlen(s));
}

void forktest(void)
{
	int n, pid;

	print("fork test\n");

	for (n = 0; n < N; n++) {
		pid = fork();
		if (pid < 0)
			break;
		if (pid == 0)
			exit(0);
	}

	if (n == N) {
		print("fork claimed to work N times!\n");
		exit(1);
	}

	for (; n > 0; n--) {
		if (wait(0) < 0) {
			print("wait stopped early\n");
			exit(1);
		}
	}

	if (wait(0) != -1) {
		print("wait got too many\n");
		exit(1);
	}

	print("fork test OK\n");
}

int main(void)
{
	forktest();
	exit(0);
}
